Pluripotent medicine identification
Identification of raw herbs
Shape identification
Seeds resemble orange petals, slightly triangular, 5-7 mm long and 3-5 mm wide. Surface gray black (black ugly), or yellowish white (white ugly), arched back, slightly flattened on both sides, slightly wrinkled, with a shallow longitudinal groove in the middle of the back, the abdomen ridge line is a round light-colored species Navel. Hard, cross-section can be seen yellow or yellowish green folds folded cotyledons 2 pieces. After water immersion, the seed coat was cracked, with obvious mucus. The gas was slightly pungent, bitter, and numbed. It is better to use particles full, without peels, etc.
Microscopic identification
Seed cross-section: 1 epidermal cell line, slightly tangentially elongated, some brown, and there is a small flat non-glandular epithelial cells below the non-glandular epidermis. The palisade cell layer consists of 2-3 rows of cells with a luminescent band on the outer edge. The nutrient layer consists of a series of tangentially elongated cells and decadent cells with fine vascular bundles and small parenchyma cells containing fine starch grains. The outermost 1-2 rows of cells in the endosperm are square, slightly thicker, and the walls of the medial cells are mucinous. Cotyledons fall into the root parenchyma and have a large number of circular secretion cavities, with a diameter of approximately 108 μm; parenchyma cells are filled with aleurone particles and fatty oil droplets, and contain calcium oxalate clusters; their diameter is approximately 18 μm.
Physical and chemical identification
1. Take the product, after soaking in water, the seed coat is cracked, and the hand spade has obvious stickiness.
2. The product powder yellowish brown. Seed coat epidermis cells are dark brown, irregular in shape, and wall-like in shape. Non-glandular single cells, yellow-brown, slightly curved, 50-240 μm long. There are secretory cavities in the fragments of the cotyledon, which are round or elliptic and 35 to 106 μm in diameter. Calcium oxalate cluster crystal diameter 10 ~ 25μm. Granular fragments and radiance can be seen with the grid.
3. Take the product 1g, pulverized, add 2mol/L ethanol solution of hydrochloric acid 30ml, heated under reflux for 1.5 hours, filtered, the filtrate was added with water 40ml, set on the water bath and steamed to non-alcoholic taste, the aqueous solution was placed in the separatory funnel, plus benzene 30ml The mixture was shaken, the benzene layer was separated, the solvent was recovered, and the residue was dissolved with 1 ml of anhydrous ethanol to prepare a sample solution. Another take the control of cows 1g, with the legal system as the reference drug solution. According to the thin layer chromatography (Appendix VI B) test, 4 μl of each of the above two solutions were pipetted on the same silica gel G plate, and cyclohexane-ethyl acetate (9:1) was used as a developing agent. Take out, dry, spray with 5% vanillin sulfuric acid solution, heating at 105 °C to the spot color is clear. In the chromatogram of the test sample, spots of the same color were observed at the positions corresponding to the chromatogram of the reference drug.
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